5TWH

human MOB1A bound to MST1 phosphorylated T367 peptide


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.260 
  • R-Value Work: 0.228 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

MOB1 Mediated Phospho-recognition in the Core Mammalian Hippo Pathway.

Couzens, A.L.Xiong, S.Knight, J.D.R.Mao, D.Y.Guettler, S.Picaud, S.Kurinov, I.Filippakopoulos, P.Sicheri, F.Gingras, A.C.

(2017) Mol. Cell Proteomics 16: 1098-1110

  • DOI: 10.1074/mcp.M116.065490
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The Hippo tumor suppressor pathway regulates organ size and tissue homoeostasis in response to diverse signaling inputs. The core of the pathway consists of a short kinase cascade: MST1 and MST2 phosphorylate and activate LATS1 and LATS2, which in tu ...

    The Hippo tumor suppressor pathway regulates organ size and tissue homoeostasis in response to diverse signaling inputs. The core of the pathway consists of a short kinase cascade: MST1 and MST2 phosphorylate and activate LATS1 and LATS2, which in turn phosphorylate and inactivate key transcriptional coactivators, YAP1 and TAZ (gene WWTR1). The MOB1 adapter protein regulates both phosphorylation reactions firstly by concurrently binding to the upstream MST and downstream LATS kinases to enable the trans phosphorylation reaction, and secondly by allosterically activating the catalytic function of LATS1 and LATS2 to directly stimulate phosphorylation of YAP and TAZ. Studies of yeast Mob1 and human MOB1 revealed that the ability to recognize phosphopeptide sequences in their interactors, Nud1 and MST2 respectively, was critical to their roles in regulating the Mitotic Exit Network in yeast and the Hippo pathway in metazoans. However, the underlying rules of phosphopeptide recognition by human MOB1, the implications of binding specificity for Hippo pathway signaling, and the generality of phosphopeptide binding function to other human MOB family members remained elusive.Employing proteomics, peptide arrays and biochemical analyses, we systematically examine the phosphopeptide binding specificity of MOB1 and find it to be highly complementary to the substrate phosphorylation specificity of MST1 and MST2. We demonstrate that autophosphorylation of MST1 and MST2 on several threonine residues provides multiple MOB1 binding sites with varying binding affinities which in turn contribute to a redundancy of MST1-MOB1 protein interactions in cells. The crystal structures of MOB1A in complex with two favored phosphopeptide sites in MST1 allow for a full description of the MOB1A phosphopeptide-binding consensus. Lastly, we show that the phosphopeptide binding properties of MOB1A are conserved in all but one of the seven MOB family members in humans, thus providing a starting point for uncovering their elusive cellular functions.


    Organizational Affiliation

    From the ‡Lunenfeld-Tanenbaum Research Institute, Sinai Health System, Toronto, Ontario, Canada, M5G 1X5.,‖Structural Genomics Consortium, University of Oxford, Old Road Campus Research Building, Roosevelt Drive, Oxford OX3 7DQ, U.K.,From the ‡Lunenfeld-Tanenbaum Research Institute, Sinai Health System, Toronto, Ontario, Canada, M5G 1X5, sicheri@lunenfeld.ca gingras@lunenfeld.ca.,‡‡Ludwig Institute for Cancer Research, University of Oxford, Oxford OX3 7DQ, U.K.,¶New address: The Institute of Cancer Research, Divisions of Structural Biology and Cancer Biology, London, UK, SW7 3RP.,§Department of Biochemistry, University of Toronto, Toronto, Ontario, Canada, M5S 1A8.,**NE-CAT APS, Building 436E, Argonne National Lab, 9700 S. Cass Avenue, Argonne, Illinois 60439.,§§Department of Molecular Genetics, University of Toronto, Toronto, Ontario, Canada, M5S 1A8.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
MOB kinase activator 1A
A
216Homo sapiensMutation(s): 0 
Gene Names: MOB1A (C2orf6, MOB4B, MOBK1B, MOBKL1B)
Find proteins for Q9H8S9 (Homo sapiens)
Go to Gene View: MOB1A
Go to UniProtKB:  Q9H8S9
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
T367 peptide
E
17Homo sapiensMutation(s): 0 
Gene Names: STK4 (KRS2, MST1)
EC: 2.7.11.1
Find proteins for Q13043 (Homo sapiens)
Go to Gene View: STK4
Go to UniProtKB:  Q13043
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
A
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
TPO
Query on TPO
E
L-PEPTIDE LINKINGC4 H10 N O6 PTHR
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.260 
  • R-Value Work: 0.228 
  • Space Group: P 43 21 2
Unit Cell:
Length (Å)Angle (°)
a = 60.986α = 90.00
b = 60.986β = 90.00
c = 138.486γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
PHENIXrefinement
HKL-2000data scaling
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2016-11-13 
  • Released Date: 2017-04-12 
  • Deposition Author(s): Xiong, S., Sicheri, F.

Revision History 

  • Version 1.0: 2017-04-12
    Type: Initial release
  • Version 1.1: 2017-04-19
    Type: Database references
  • Version 1.2: 2017-06-14
    Type: Database references